Home / 12,907.28-19,347.85-8,747.71

Finding the Fourth Proportional to 12,907.28, 19,347.85 and 8,747.71

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Solution

The fourth proportional to 12,907.28, 19,347.85 and 8,747.71 is: 13,112.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.28 : 19,347.85 = 8,747.71 : x
  2. Step 2: Convert to fraction form
    12,907.28/19,347.85 = 8,747.71/x
  3. Step 3: Cross multiply
    12,907.28x = 19,347.85 × 8,747.71
  4. Step 4: Simplify right side
    12,907.28x = 169,249,380.92
  5. Step 5: Solve for x
    x = 169,249,380.92/12,907.28
  6. Step 6: Final answer
    x = 13,112.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.